Fred ii



(No Model.) I

F. H. BLAKE.

LOOK.

No. 597,382. Patented Jan. 18, 1898.

VVitneSses. Inventor.

w. J- M EBMM fi f ttorneys 1m: mums Perms do. mum-wan. wsmwmn. ov aUNITED STATES PATENT ruins,

FRED l-I. BLAKE, OF ORCESTER, MASSACHUSETTS.

LOCK.

SPECIFICATION forming part of Letters Patent No. 597,382, dated January18, 1898.

A li ati fil d January 14,1897. Serial No. 619,184. (No model.)

To all whom it may concern.-

Be it known that I, FRED H. BLAKE, a citizen of the United States,residing at orcester, in the county of Worcester and State ofMassachusetts, have invented a new and useful Improvement in Locks, ofwhich the following is a specification.

My invention relates to an improved form of lock which has been designedfor use in connection with bank-vaults or heavy safedoors; and theobject of my invention is to provide an accurately-opening lock in whichthe parts are arranged so that the releasing mechanism will act morepromptly and accurately and so that the parts will be less liable tobecome worn or disarranged.

To these ends my invention consists of the parts and combinations ofparts, as hereinafter described, and more particularly pointed out inthe claims at the end of thisspecification.

In that class of locks to which my invent on more especially relates astop or looking piece is arranged to engage behind the-end of a part orplungerbolt. This locking-piece has heretofore ordinarily been directlyactuated by a movable bar or piece controlled from the time mechanism orother operative parts of the lock. When the movable bar is moved in onedirection, it raises the lockingpiece into its locked position, and whenit is moved in the other direction the locking-piece is released. anddrops out of the way, so that the pin nger-bolt may be withdrawn and thevault or safe opened. In those constructions inwhich the movable bar iscontrolled by a time mechanism the motion of the movable bar is veryslow or gradual, and as said movable bar passes out of engagement withthe locking-piece said locking-piece has heretofore been allowed tomove'down gradually, so that during the last part of the operation apart only of the locking-piece will be interposed in the path of theplunger-bolt. In practice I have found that an operation of this kind isundesirable, as the plunger-bolt may be prematurely moved intoengagement with the upper edge of the locking-piece and the lockingpiecemay become worn off or defaced thereby.

The especial object of my invention is therefore to provideaconstruction in which the locking-piece will be mounted so as to passat once to its released position from a fullylocked position.

A further object of my invention is to arrange the parts of a lock ofthis character so that they may be used in. connection with aplunger-bolt which enters from either side of the casing.

In the accompanying drawings, Figure 1 is a sectional view of sufficientparts of a lookingmechanism to illustrate the application of myinvention thereto, and Fig. 2 is a detached perspective view of thepivoted locking-piece.

A look constructed according to my invention comprises a locking-piece,a movable barsuch, for example, as have been heretofore controlled bythe time mechanism of a time-lock and which is arranged to set andrelease the locking-piece-and a detent which is arranged to hold thelocking-piece in its fully-locked position until the detent is releasedby the movable bar. The parts of my lock are also preferably removablymounted in their casing, so that they may be turned around or adjustedto cofiperate with a plunger-bolt entering the casing from either side.

Referring to the drawings in detail, A designates the casing, which, asillustrated,

is provided with pockets 10, 11, and 12 for receiving the ordinary timemechanisms. Mounted in the casing A is the movable bar 13, havingprojections or cars 14c, 15, and 16 for engagement with the timemechanisms. The movable bar 13 is pressed in one direction by means of aspring 17. On its under side the movable bar 13 is provided with adownwardly-extending projection or cam 18. Friction-rollers 22 arejournaled on opposite sides of the upwardly-extending tail or end of thelocking-piece 21, the roller 22 on the front side of the locking-piece21 beinglocated in position to be engaged by the downwardlyextending camor projection 18. The lockingpiece 21 is journaled on a stud 20, whichstud is arranged centrally with respect to the easing A. A pin 23extends through the outer end of the locking-piece 21 and is arranged toengage with a detent 2i, pivotally mounted in a bracket 25. The detent24: is normally held in engagement with the pin 23 by means of aweighted arm 26. The bracket 25 is fas tened in place in the casing A bymeans of a suitable screw, as 29. An operating bolt or piece 19 is adjustably threaded into the cam 18 of the movable bar 13 and is fastenedin its adjusted position by means of a locknut 32. v

The action of the plunger-bolt B, which is arranged to enter the casingA through an opening 27, (indicated by dotted lines,) is controlled bythe position of the locking-piece 21. IVhen the locking-piece 21 is inits raised position, it will engage behind the end of the plunger-bolt Band prevent said bolt from being retracted. Then the locking-piece 21 isreleased, it will move down to its lowest position and the bolt B may beretracted and the vault or safe unlocked in the ordinary manner.

During the entire time that the device is locked the locking-piece 21will be supported in its fully-locked position and will oppose a firmresistance to the retraction of the plunger-bolt Bthat is to say, thelocking-piece 21 willbe supported in a fully-locked position until theoperating bolt or piece 19 engages the top of the detent 24 and movesthe same out of engagement with pin 23, so that the locking-piece 21will be released and will pass at once from its fully-locked position toan inoperative position.

When a lock constructed according to my invention is to be used inconnection with a plunger-bolt entering the other side of the casingAas, for instance, through the opening indicated by the dotted lines28-the movable bar 13 and locking-piece .21. may be removed and turnedto an opposite position. The bracket 25 may also be moved to the otherside of the casing and held in position by means of a screwinsertedthrough a suitable opening, as 30, thus bringing the parts inposition to cooperate with a plunger-bolt screwed to the casing A in anyof the ordinary manners.

I am aware that changes may be made in the construction of locks bythose who are skilled in the art without departing from the scope of myinvention as expressed in the claims, and while my construction has beenespecially designed for use in connection with time-locks, it may, ifdesired, be employed in connection with combination-locks or other formsof actuating mechanism. I do not wish, therefore, to be limited to theforms which I have shown and described; but

IVhat I do claim, and desire to secure by Letters Patent of the UnitedStates, is

1. In a device of the class described, the combination of alocking-piece, a movable piece arranged to operate the locking-piece toset the same in its locking position, or to release the same, and adetent for holding the locking-piece in its fully-locked position untilsaid detent is released by the movable piece, substantially asdescribed.

2. In a device of the class described, the combination of alockingpiece, a movable bar having a cam arranged to shift thelocking-piece from an unlocked to alocked position, and a detent, theparts being arranged so that the locking-piece will pass at once fromits fully-locked position into an inoperative position when the detentis released, substantially as described.

3. The combination of a casing, a lockingpiece, a movable bar arrangedto operate said locking-piece, and a detent arranged to hold thelocking-piece in its fully-locked position until the same is released,said parts being removably and reversely mounted in the casing so thatthey may be set to cooperate with a plunger-bolt entering the casing ateither side thereof, substantially as described.

4. The combination of a pivoted lockingpiece, a movable bar arranged toset and release the locking-piece, a weighted detent, and an adjustableoperating-pin for engaging said detent, the parts being arranged so thatthe locking-piece will pass at once from its fully-locked position intoan inoperative position when the detent is released, substantially asdescribed.

5. The combination of a casing A, a stud 20 arranged centrally withrespect to said casing, a locking-piece 21 pivoted on said stud, amovable bar 13 having a cam for engaging and setting said locking-piece,a Weighted detent 24 for holding the locking-piece in its fully-lockedposition, an adjustable detentoperating pin 19 carried by the movablebar 13, and a clamping-nut 20 for holding the pin 19 in its adjustedposition, substantially as described.

6. The combination of a casing A, a stud 20 arranged centrally withrespect to said casing, a locking-piece 21 removably and reversiblypivoted on said stud, a reversible, movable bar 13 having a cam forengaging and setting said locking-piece, a weighted de- -tent 24: forholding the locking-piece in its fully-locked position, a removable,reversible bracket 25 supporting said detent, and an adjustableoperating-pin 19 carried by the movable bar 13, said parts beingremovably and reversibly arranged to cooperate with a plunger-boltentering the casing at either side thereof, substantially as described.

In testimony whereof I have hereunto set my hand in the presence of twosubscribing witnesses.

FRED H. BLAKE.

WVitnesses:

LOUIS W. SoUTHeATE, PHILIP W. SOUTHG-ATE.

